wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The value of xxm+yyn+zzr is

A
1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 2
∣ ∣xnrmyrmyz∣ ∣=0
applying R1R1R2;R2R2R3 we get
∣ ∣xmny00ynrzmnz∣ ∣=0(xm)(yn)z+(ny)(rz)mn(rz)(xm)=0
dividing by (xm)(yn)(zr) we have
zzr+mxm+nyn=0zzr+1+mxm+1+nyn+1=2
zzr+mxm+nyn=2=2zzr1+mxm1+nyn1=01=1
Now A.MG.Mzzr+mxm+nyn3(zzr+xxm+yyn=0)1/3zzr+mxm+nyn827

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Direction Cosines and Direction Ratios
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon